document.write( "Question 858288: what is the working for x^2-4x+4 ....using the quadratic formula? \n" ); document.write( "

Algebra.Com's Answer #517153 by mananth(16946) $\"\"$ $\"About$

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a= 1 , b= -4 , c= 4
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\n" ); document.write( "b^2-4ac= 16 + -16
\n" ); document.write( "b^2-4ac= 0
\n" ); document.write( " $\"%09sqrt%28%090%09%29=%090%09\"$
\n" ); document.write( " $\"x=%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( " $\"x1=%28-b%2Bsqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( "x1=( 4 + 0 )/ 2
\n" ); document.write( "x1= 2
\n" ); document.write( " $\"x2=%28-b-sqrt%28b%5E2-4ac%29%29%2F%282a%29\"$
\n" ); document.write( "x2=( 4 0 ) / 2
\n" ); document.write( "x2= 2 \r
\n" ); document.write( "\n" ); document.write( "The root is 2 \n" ); document.write( "

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